(PHP 5 >= 5.2.2, PHP 7)
SplFileInfo::getRealPath — Gets absolute path to file
public SplFileInfo::getRealPath ( ) : string
This method expands all symbolic links, resolves relative references and returns the real path to the file.
This function has no parameters.
Returns the path to the file, or false if the file does not exist.
Example #1 SplFileInfo::getRealPath() example
<?php
$info = new SplFileInfo('/..//./../../'.__FILE__);
var_dump($info->getRealPath());
$info = new SplFileInfo('/tmp');
var_dump($info->getRealPath());
$info = new SplFileInfo('/I/Do/Not/Exist');
var_dump($info->getRealPath());
$info = new SplFileInfo('php://output');
var_dump($info->getRealPath());
$info = new SplFileInfo("");
var_dump($info->getRealPath());
?> The above example will output something similar to:
string(28) "/private/tmp/phptempfile.php" string(12) "/private/tmp" bool(false) bool(false) string(12) "/private/tmp"
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https://www.php.net/manual/en/splfileinfo.getrealpath.php